Perhaps you should try some spelling variations:
thu canh » thuc hanh, thu cong, thu ban
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
canh ky » hanh ky, canh tay, nganh ky
cac toc » cac toi, cac thoi
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu canh ky nang x hoi. hieu van ((cac toc) or (cac nuoc)) ((va hanh) OR (va thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu canh ky nang x hoi. hieu van ((cac toc) OR (cac nuoc)) ((va hanh) OR (va thanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh ky nang x hoi. hieu van ((cac toc) or (cac nuoc)) ((va hanh) OR (va thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu canh ky nang x hoi. hieu van ((cac toc) or (cac nuoc)) ((va hanh) OR (va thanh)) vi cua tre*.